Steam and hot-water generator



(No Model.) 3 Sheets-Sheet 1.

W. O. HIGGINS.

STEAM AND HOT WATER GENERATOR.

Patented Aug. 26, 1890.

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W. O. HIGGINS. STEAM AND HOT WATER GENERATOR.

Patented Aug. 26, 1 890.

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W. G. HIGGINS. STEAM AND'HOT WATER GENERATOR.

No. 434,928. Patented Aug. 26, 1890.

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UNITED STATES W'ERTER C. HIGGINS, OF

PATENT OEEIcE.

NORWICH, CONNECTICUT.

STEAM AND HOT-WATER GENERATOR.

SPECIFICATION forming part of Letters Patent No. 434,928, dated August 26, 1890.

Application filed May 12, 1890.

To all whom it may concern:

Be it known that I, WERTER O. HIGGINS, a citizen of the United States, residing at Norwich, in the county of New London and State of Connecticut, have invented certain new and useful Improvements in Steam and Hot- Water Generators, which improvements are fully set forth and described in the following specification, reference being had to the accompanying three sheets of drawings.

The immediate object of my invention is to cut up the water-space in steam or hot-water generators and bring the water into such near relation to the fire that the products of combustion may be utilized to the greatest possible extent, keeping in View meanwhile that such result should be reached cheaply and the construction be such as not to interfere with the free circulation of water in hot-water heaters. With these desiderata in view I have provided a novel vessel, forming a part of the boiler-section, located within the firepot, with pipes or passages connecting saidvessel with said boiler at several points.

The annexed drawings illustrate clearly my said invention, Figure 1 being a front side elevation of a hot-water generator embodying my improvements, and Fig. 2 a central vertical sectional View of the same on line a; so of Fig. 1. Fig. 3 is a cross-section of said generator on line 2 z of Fig. 2, and Fig. 4 is an elevation of the vessel or water-section which I suspend within the fire-pot and which forms the principal feature of my invention.

The letter a in the drawings denotes the outer jacket or shell of the generator, I) the inner wall, and c an intermediate wall or shell, the three shells being substantially concentrio with each other andforming three separate chambers, the central one being the firepot of the generator. The space between walls I) and-c contains the water to be heated, and the space between walls 0 and a provides a hot-air jacket, as hereinafter described. A grate d and ash-pit 6, both of ordinary construction, are provided, and preferably a dome f is connected with the top of the boiler-sec tion by a series of pipes g, above which and leading outward from said dome is a corresponding series of pipes h, to which may be connected service-pipes leading to radiators located at distant points. The outer jacket Serial No. 351,497. (No model.)

a is cast with a flange or collar 2' to receive a draft-pipe leading to the chimney.

\Vithin the firepot is a vessel It, preferably of globular form, as shown, having proj ectin g from both the upper and lower portions thereof a series of hollow arms that connect the interior of the said globular vessel with the water-space between the walls I) and c. The arms k are cast integral with the wall 12, and it will be understood that the water between the walls I) and c and surrounding the fire-pot and combustion-chamber may freely pass through the globular vessel 70, and thus 011- the fire. In practice the superheated water in vessel tends to rise, and is followed and replaced by the slightly-cooler water between the walls I) and c, which in turn is superlowed by other water from outside the firepot. This results in a constantly-circulating body of hot water, which may be drawn from pipes h as required.

The peculiar arrangement of arms 70 relative to the globular Vessel 7c and the adjacent water-jacket around the fire-pot should be noted. The upper series of arms is reach upward at an angle of perhaps thirty degrees and afford an easy and unobstructed outlet for the superheated water, which naturally rises, while the lower series of arms extend downward to the lower portion of the waterjacket, where the cooler portions of the water are wont to settle. The cooler portions of the water (needing most the influence of the firepot and combustion-chamber) are thus naturally drawn upward into the globular vessel 7a, where they are immediately superheated and passed onto the dome to be used when necessary. I have indicated by an arrow at the upper end of the fire-pot the direction followed by the smoke and other products of combustion under a direct draft; but, when desired, a suitable damper in the smoke-pipe may be closed, or partially closed, in which case the hot air is checked and thrown back into the annular space between walls 0 and a, thus surrounding the waterjacket and assisting materially in heating the water therein contained.

The generator, as above described, is extremely simple in construction, may be ecoheated and passes upward, only to be fol-' culate in small volume through and around nomically run, and requires no special training or experience on the part of the operator. My improved generator has also the advantage of being portable.

Having thus described my invention, I claim- 1. In combination in a generator of the class referred to, outer, inner, and intermediate shells providing a central fire-pot, a Waterjacket surrounding said fire-pot, and a hotair jacket surrounding said Water-jacket, all

as set forth, and a superheatingchamber suspended within said fire-pot and connected by hollow arms with said Water-jacket, said arms being cast integral With the Water-jacket, as and for the purpose specified.

2. In combination in a generatorof the class referred to, outer, inner, and intermediate shells providing a fire-pot, Water-jacket, and hot-air jacket, as set forth, a dome connected by water-legs with said'water-jacket, servicepipe connections leadingoutward from the said dome, and a superheating-chamber suspended within the said fire-pot by hollow arms cast integral With the said Water-jacket, all being substantially as and for the objects specified.

HARMAN S. BURT, FRANK H. ALLEN. 

